4055890 has 24 divisors (see below), whose sum is σ = 7490340. Its totient is φ = 1581120.

The previous prime is 4055851. The next prime is 4055893. The reversal of 4055890 is 985504.

It can be written as a sum of positive squares in 6 ways, for example, as 178929 + 3876961 = 423^2 + 1969^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (4055893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37156 + ... + 37264.

Almost surely, 2^4055890 is an apocalyptic number.

4055890 is a deficient number, since it is larger than the sum of its proper divisors (3434450).

4055890 is a wasteful number, since it uses less digits than its factorization.

4055890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238 (or 177 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 4055890 is about 2013.9240303447. The cubic root of 4055890 is about 159.4760202810.

The spelling of 4055890 in words is "four million, fifty-five thousand, eight hundred ninety".